body,
ol,
ul,
h1,
h2,
h3,
h4,
h5,
h6,
p,
th,
td,
dl,
dd,
form,
fieldset,
legend,
input,
textarea,
select {
    margin: 0;
    padding: 0
}

body {
    font: 12px "宋体", "Arial Narrow", HELVETICA;
    background: #fff;
    -webkit-text-size-adjust: 100%;
}

a {
    color: #2d374b;
    text-decoration: none
}

a:hover {
    color: #cd0200;
    text-decoration: underline
}

em {
    font-style: normal
}

li {
    list-style: none
}

img {
    border: 0;
    vertical-align: middle
}

table {
    border-collapse: collapse;
    border-spacing: 0
}

p {
    word-wrap: break-word
}

.first_Page {
    background-color: #b8e5f8;
    background-image: url("../img/background.png");
    background-repeat: no-repeat;
    background-size: cover;
}

.login_box {
    float: left;
    margin-left: 38%;
    width: 430px;
    margin-top: 80px;
    height: 420px;
    background-color: white;
    text-align: center;
}

.login_box_input {
    margin-top: 20px;
    height: 350px;
    width: 100%
}

.login_input {
    height: 250px
}

.login_input_box {
    margin-top: 50px;
    margin-left: 30px;
}

.login_input_box_phone {
    margin-left: 60px;
    margin-top: 15px;
    border-bottom: 1px dimgray
}

.login_input_box_password {
    margin-top: 15px;
    margin-left: 60px
}

.register_input {
    height: 250px;
}

.register_input_box_phone {
    margin-top: 15px;
    margin-left: 60px;
    border-bottom: 1px #8590a6
}

.register_input_box_password {
    margin-top: 15px;
    margin-left: 60px
}

.change {
    margin-top: 40px;
    height: 70px;
    width: 430px;
    text-align: center;
    background-color: #f6f6f6;
    padding-top: 30px;
    font-size: 15px;
}

.downloadZhihu {
    margin-top: 20px;
    height: 42px;
    background-color: #8590a6;
    width: 430px;
}